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doc: add section for RTIO analyzer, mention GtkWave

This commit is contained in:
Sebastien Bourdeauducq 2016-02-15 23:07:41 +01:00
parent 617c416124
commit 122ddc40aa
1 changed files with 4 additions and 1 deletions
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doc/manual/getting_started_core.rst
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@ -134,6 +134,9 @@ Try reducing the period of the generated waveform until the CPU cannot keep up w
except RTIOUnderflow: except RTIOUnderflow:
print_underflow() print_underflow()
RTIO analyzer
-------------
The core device records the real-time IO waveforms into a circular buffer. It is possible to dump any Python object so that it appears alongside the waveforms using the ``rtio_log`` function, which accepts a channel name (i.e. a log target) as the first argument: :: The core device records the real-time IO waveforms into a circular buffer. It is possible to dump any Python object so that it appears alongside the waveforms using the ``rtio_log`` function, which accepts a channel name (i.e. a log target) as the first argument: ::
from artiq.experiment import * from artiq.experiment import *
@ -151,7 +154,7 @@ The core device records the real-time IO waveforms into a circular buffer. It is
rtio_log("ttl0", "i", i) rtio_log("ttl0", "i", i)
delay(...) delay(...)
Afterwards, the recorded data can be extracted and written to a VCD file using ``artiq_coreanalyzer -w rtio.vcd`` (see: :ref:`core-device-rtio-analyzer-tool`). Afterwards, the recorded data can be extracted and written to a VCD file using ``artiq_coreanalyzer -w rtio.vcd`` (see: :ref:`core-device-rtio-analyzer-tool`). VCD files can be viewed using third-party tools such as GtkWave.
Parallel and sequential blocks Parallel and sequential blocks
------------------------------ ------------------------------